I can get a similar recorded peak HR, but it's just a false recording caused by poor contact of the HR strap. Assuming that you can download the data to a PC, looking at the HR trace it should be fairly obvious if it's a real value or just noise.
How do you start a race in them? I mean if it's a busy race then you normally have to walk a few paces before there's space to run, but as the manufacturers of these shoes say it's actually not possible to walk in them. Do you just have to just stand in a stationary position until there's a clear view to the horizon, when you can launch into running mode?